NVIDIA Announces New Ray Tracing Algorithm
NVIDIA researchers introduced a new algorithm they created in collaboration with the Visua Computing Lab at Dartmouth College at SIGGRAPH 2020…
NVIDIA researchers introduced a new algorithm they created in collaboration with the Visua Computing Lab at Dartmouth College at SIGGRAPH 2020…
NVIDIA researchers, At SIGGRAPH 2020, they introduced a new algorithm they created in collaboration with the Visua Computing Lab at Dartmouth College. ReSTIR This algorithm, called , can detect and process dynamic and direct (not reflected from any surface) lights from millions of light sources.
Explaining the new ray tracing algorithm, Benedikt Bitterli and a PhD student at Dartmouth who received a scholarship from NVIDIA, wrote in their article “Our basic idea is to use the information we get from the incoming pixels to decide which rays to follow. This idea brings about post-processing stabilization and anti-aliasing.” he said.
Ray tracing technology is improving day by day
said Kevin Margo, NVIDIA CGI Creative Director. "This research could lead us to a radical change: In visual scenes, we need to intuitively place arbitrary numbers of sources to cast dynamic shadows." he said. The ReSTIR algorithm, in short, resamples a series of light samples and applies them to surrounding spatial and temporal samples to extract information from surrounding samples.
newly developed ray tracing algorithm, It can track a maximum of 8 rays per pixel and has managed to process a scene containing 3.4 million sources in under 50 milliseconds. Of course, the graphics card that will process such a high quality image and algorithm must be powerful. NVIDIA is one of the flagships for this GeForce RTX 2080Ti He preferred the graphics card, but according to the researchers, it would be beneficial to use a graphics card with higher memory for scenes other than the amusement park scene used in the test. For this reason Titan RTX It could be a good choice.
In general, this approach uses a side-effect-free estimation tool compared to the algorithms used by previous ray tracing technologies. up to 60 times, if the dependent estimator is used. up to 65 times There is an increase in speed. Another important thing is that rebuilding and filtering do not need to be processed after the rendering is complete.
Like most scientific research, the ReSTIR algorithm is not ready yet. We expect it to be officially published in the future.
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